Heel-cutter



(No Model.)

A. McDOWELL.

HEEL GUTTERF.

No. 518,043. Patented-Apr. 10, 1894.

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UNITED STATES PATENT OFFICE...VV

ALEXANDER MCDOWELL, OF LYNN, MASSAOHUSETTS.

`HEE'L-ouTTER.

SPECIFICATION forming part of Letters Patent No. 518,043, dated April10, 1894.

V Application filecl'anuary 3, 1893. $erial No. 4571074- (NO model)description, reference being had to the accom-` panying drawings,forming a partof this specification, in explaining its nature.

The. invention relates to rotary cutters adapted to trimheel seats andheels, and it comprises various features of construction and 01.tnization, all of which will hereinafter be fully described.

In the drawings: Figure 1 is a view in section of the cutter. Fig. 2 isa view in elevation thereof. Figs. 3, 4 and 5 are detail views.

The in v ontion consists of a disk at the outer end of a rotary shafthaving in its face a shallow recess, the outer edge of which is underout in the form of a dove-tail to interlock with a dove-tail section ofthe cutters.

The cutters may be two or three in number, and they are seoured in therecess of the disk by eccentric studs or screws, which permit a changein the position or rake of the cutting edge of each cutter; and they areheld looked in place against the face plate, and withv their dovetailsections interlocking with the dovetail of the plate by means ofpositioning and holding pins carried by a clamp plate' This clamp plateis adapted to be turned upon a spindle to move its pins into contactwith eccentric surfaces upon the cutter to force or move them outwardly,and is also arranged to bear upon inward extending flanges of thecutters to press and hold them firmly against the face plate. Thisclamping plate is looked to the face plate by a Stud and looking screw.Between the face plate and the clamp plate is aspring which acts to movethe clamp plate outward upon its spindle when its holding nut isreleased, to thereby enable the cutters to be more readily adjusted. Theouter edge of the disk is preferably beveled or inclin ed, to make itsouter diameter the largest, and when used for a heel trimmer astationary gage plate against which the tread of the top lift bears isarranged to extend upon this inclined edge of the face plate, thesection of the edge of the face plate extending beyond the gage lift.

Referring to the drawings, A is a shaft or plate, acting as a rest forthe edge of the top i spindle withl which the plate B is interlocked,

or to which it is Secured. The outer edge b of this plate is preferablyinclined from its front corner b'. In the face of the plate is a shallowcircular recess 122 ending in the dovetail under Cut b. There extendsforward from the face a shaft, studV or spindle 64, having the threadedend bs.

In the plate'B are studs C. These studs preferably are eccentrio to theholes in the plate which hold them, and they are adapted to be turned insaid holes to any desired position, and are looked in such position bythe looking nuts c' upon the back side of said plates. (See Fie. 3.)-'These studs serve as the pivots for the cutter C. Each blade has afoot 02 at right angles to the main outting section, which rests againstthe face of the plate B; and there is in this foot at its rear end ahole C8 of a size to take the ecoent'rio pin or stud. The outer edge ofthis foot has the dovetail extensionic4 which interlocksinto thedovetail recess b3 of the plate B.y Upon the inner edge of the foot isthe eccentric surface 05, against which a pin, stud, or projection dbears in looking the cutter in place with its dove-tail o4 interlockedwith the dovetail 193 of the plate B. These looking pins or projectionsd are upon the inner side of aclamp plate D, which has a central holed'to fit the spindle end 194. The outer edge of this clamp plate bearsupon the feet 02 of the cutter and serves to clamp thern firmly againstthe face of the plate B, the clamp plate being looked in position by thenut 012.

A spring 613 is interposed between the plate B and the olam p plate, andserves to,press the' clamp plate outward when the nut is released. Inlockngthe cuttersin place the clamp plate is put on the spindle and itspositioning pins brought into contact withvthe eocentrio surfacec5 ofthe cutters, foroing them outward i IOO mer, and the tread surface ofthe top lift will then be sustained by the tread rest E, which isstationary and attached to a fixed part of a machine, and has theinclined surface e.

Having thus fully described my invention, I claim and desire to secureby Letters Patent of the United States- 1. In a sole and heel cutterofthe character specified the combination of a face plate having twosurfaces, the outer one of which overhangs the inner one with cuttingblades hav ing the feet 02 at right angles to the main cutting sectionsand within them, and having surfaces which bear against the two surfacesof the face plate and extend under the overhanging part of the outersection, and devices for looking the cutter to the plate in thisposition, as and for the purposes described.

2. In a cutter of the character specified, the combination of the faceplate having the circular recess b2 in its face and the overhangingsection bs, with the cutters O having the feet 02 and the underlappingextensions 04, and the shaft A having the spindle end b4 and the clampplate D held upon the said spindle end against the feet of the cuttersby a nut 192, as and for the purposes described.

3. The cutter having a face plate and a shoulder, cuttin g blades,pivoted at their rear ends to the face plate and having shoulders tocontact with the shoulder of the face plate, and a clamp plate forclamping said cutters to the face plate having looking pins orprojections to engage said cutters and maintain theirshoulders incontact With the shoulder or the plate, as and for the purposesdescribed.

4. In a cutter of. the character specified, com prising a face platehaving a number of cutters O having the feet c attached thereto bypivots passing through the ends of said feet into the face plate, andsaid pivots, the cutting-plate feet-engaging sections of which areeccentric to the portions held in the plate, as and for the purposesdescribed.

ALEXANDER MCDOWELL. In presence of- J. M. DOLAN, M. LYNcH.

